APA (7th ed.) Citation

Collman, R. D., Cochran, C. C., Werner, S. E., & Gradle, W. J. (2004). Soil survey of McLean County, Illinois. Natural Resources Conservation Service.

Chicago Style (17th ed.) Citation

Collman, Ronald D., Christopher C. Cochran, Sam E. Werner, and William J. Gradle. Soil Survey of McLean County, Illinois. [Washington, D.C.?]: Natural Resources Conservation Service, 2004.

MLA (9th ed.) Citation

Collman, Ronald D., et al. Soil Survey of McLean County, Illinois. Natural Resources Conservation Service, 2004.